java - 如何防止随机匹配生成器重复？

Question

这个问题已经有答案了:

Non repeating random numbers (2 个回答)

已关闭 8 年前。

我制作了一个随机摔跤比赛生成器，它是根据教科书中的随机短语生成器改编的。我想知道如何制作，这样同一个名字就不会在同一次运行中出现两次。不能让 splinter 机对 splinter 机，对吗？

public class matchOMatic {
    public static void main (String [] args) {

    String [] wordListOne = {"The Crusher", "The Main Man", "The Macho-man, Randy Savage", "The Nature Boy, Rick Flare", "Batista", "Hollywood Hulk Hogan", "Vader", "The Undertaker", "Stone Cold Steve Austin" };
    String [] wordListThree = {"The Crusher", "The Main Man", "The Macho-man, Randy Savage", "The Nature Boy, Rick Flare", "Batista", "Hollywood Hulk Hogan", "Vader", "The Undertaker", "Stone Cold Steve Austin"};

    int oneLength = wordListOne.length;
    int threeLength = wordListThree.length;

    int rand1 = (int) (Math.random() * oneLength);
    int rand3 = (int) (Math.random() * threeLength);

    String phrase = wordListOne[rand1] + " and in the opposite corner is his opponent, " + wordListThree[rand3];

    System.out.print("In this corner we have " + phrase);
    System.out.println("!");
    }
}

Answer 1

非常简单的解决方案!

只需将其放在为 rand3 和 rand2 赋值之后即可:

while(rand3 == rand1) {
    rand3 = (int) (Math.random() * threeLength);
}

这将为 rand3 不断选择新值，直到值不同为止!

我希望这有帮助。祝你的程序好运:)